CN205937264U - Servopump accuse hydraulic press of high fine positioning - Google Patents
Servopump accuse hydraulic press of high fine positioning Download PDFInfo
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- CN205937264U CN205937264U CN201620891353.XU CN201620891353U CN205937264U CN 205937264 U CN205937264 U CN 205937264U CN 201620891353 U CN201620891353 U CN 201620891353U CN 205937264 U CN205937264 U CN 205937264U
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Abstract
The utility model relates to a servopump accuse hydraulic press of high fine positioning, the epicoele of master cylinder passes through the prefill valve and links to each other with the oil tank, and the servopump suction inlet links to each other with the oil tank through first check valve and first oil filter, and the servopump export links to each other with the epicoele of master cylinder through the 2nd magenetic exchange valve, and the servopump export still links to each other with the oil tank through second check valve and second oil filter, the master cylinder cavity of resorption links to each other with the entry of third check valve, and the export of third check valve links to each other with the export of first check valve, and it has the third overflow valve to connect in parallel in third check valve both ends, the liquid accuse mouth of prefill valve links to each other with a magenetic exchange valve's B mouth, and a magenetic exchange valve's P mouth links to each other with the export of third check valve, and a magenetic exchange valve's T mouth links to each other with the oil tank, the cavity of resorption of master cylinder still links to each other with the oil tank through fast valves down. " what wanting, what are given " control can be realized to this hydraulic press, reduces the energy consumption and reduces fluid overflow and fluid temperature rise, realizes slide position's high accuracy control.
Description
Technical field
The present invention relates to a kind of hydraulic press, particularly to a kind of servo-pump control hydraulic press of high fine positioning.
Background technology
Most hydraulic presses adopt threephase asynchronous to drive variable displacement with constant power pump to provide the energy although can be real at present
Now exceed the effect that setup pressure value reduces output flow, but in whole work process, motor be constantly in normal operation,
And actually under fast, pressurize and on stop taking, putting material state and can be not required to Motor drive operation of oil pump, thus on the one hand can cause
Energy waste, the circulation overflow on the other hand also resulting in fluid forms oil temperature rising.
Threephase asynchronous is only driven variable displacement with constant power on control form by the servo-pump control hydraulic press developed
Pump is replaced with servomotor driving gear pump, and so when the flow that system needs changes, motor speed is followed flow and referred to
The size of order and become, so that the output flow of oil pump is changed, be truly realized the control of " want how many give how many " it is achieved that in oil
Energy-saving application on press, has very important significance for reducing energy waste, but this kind of servo-pump control hydraulic press is still adopted
With the inserted valve hydraulic system of digital output modul although the more conventional lathe of positioning precision is significantly improved, but it has been not met by
The requirement that a little special industry high precision positions control.
Section hydraulic machine is also had to be to realize high-precision position control, using servo valve throttling control method, but such meeting
The a large amount of overflows forming fluid cause the rising of oil temperature, need to increase chiller and carry out Oil-temperature control.
Content of the invention
It is an object of the invention to, overcome problems of the prior art, a kind of servo-pump control of high fine positioning is provided
Hydraulic press.
For solve above technical problem, the servo-pump control hydraulic press of a kind of high fine positioning of the present invention, including master cylinder 1 and by
The servopump B1 that servomotor M1 drives, the epicoele of described master cylinder is connected with fuel tank by replenishing valve D4, described servopump B1's
Suction inlet is connected with the outlet of the first check valve D1, and the entrance of the first check valve D1 is connected with fuel tank by the first oil filter L1, institute
The outlet stating servopump B1 is connected with the P mouth of the second solenoid directional control valve YV2, and the A mouth of the second solenoid directional control valve YV2 and T mouth are respectively
It is connected with fuel tank, the B mouth of the second solenoid directional control valve YV2 is connected with the epicoele of described master cylinder, the epicoele pipeline of described master cylinder is pacified
Equipped with upper cavity pressure sensor P1；The outlet of described servopump B1 is also connected with the outlet of the second check valve D2, the second check valve
The entrance of D2 is connected with fuel tank by the second oil filter L2；The cavity of resorption of described master cylinder is connected with the entrance of the 3rd check valve D3, the
The outlet of three check valve D3 is connected with the outlet of the first check valve D1, and the two ends of the 3rd check valve D3 are parallel with the 3rd overflow valve
F3；The hydraulic control mouth of described replenishing valve D4 is connected with the B mouth of the first solenoid directional control valve YV1, the P mouth of the first solenoid directional control valve YV1 with
The outlet of the 3rd check valve D3 is connected, and the T mouth of the first solenoid directional control valve YV1 is connected with fuel tank；First solenoid directional control valve YV1 and
Two solenoid directional control valve YV2 are two four-way electromagnetic reversing valves；The cavity of resorption of described master cylinder is connected with fuel tank also by descending valve group soon.
With respect to prior art, the present invention achieves following beneficial effect：When under slide block is fast：Second solenoid directional control valve YV2
Electric, the P mouth of the second solenoid directional control valve YV2 communicates with B mouth, the positive low-speed running of servomotor M1, and the oil in fuel tank is through first
Oil filter L1 and the first check valve D1 enters servopump B1, and the hydraulic oil that servopump B1 exports is from the B of the second solenoid directional control valve YV2
Mouth enters the epicoele of master cylinder；Descend valve group to turn on so that master cylinder cavity of resorption and fuel tank directly communicate soon, slide block is in no supporting shape simultaneously
State, under gravity, sharp downward movement；First solenoid directional control valve YV1 obtains electric, the first solenoid directional control valve YV1B mouth and T mouth
Connect, the hydraulic control mouth decompression of replenishing valve D4, replenishing valve D4 self-priming is opened, fuel tank passes through the epicoele repairing to master cylinder for the replenishing valve D4.
When slide block work is entered to pressurize：First solenoid directional control valve YV1, the second solenoid directional control valve YV2 are kept as electricity, descend valve group to close cavity of resorption soon
Oil return line cuts off, and slide block can not move downward under Gravitative Loads, and lower cavity pressure increases and produces back pressure, and cavity pressure is increased to instantly
When back pressure setting value is, for example, 3～10Mpa, the 3rd overflow valve F3 opens, and the cavity of resorption oil of master cylinder converges to through the 3rd overflow valve F3
The inlet port of servopump B1, servomotor M1 forward direction runs up, and master cylinder upper cavity pressure raises rapidly, closes replenishing valve, slide block
Under pressure oil effect, work is entered at a slow speed.Slide block pressurize：First solenoid directional control valve YV1, the second solenoid directional control valve YV2 are kept as electricity,
Valve group is descended to remain turned-off soon, servomotor M1 keeps forward direction to run up, and duration is about 0.5 second.Slide block release：First electromagnetism changes
It is kept as electricity to valve YV1, the second solenoid directional control valve YV2 dead electricity, master cylinder epicoele is connected with fuel tank damping；Valve group is descended to keep closing soon
Close, servomotor M1 off-load low speed to antiport, duration is about 0.5 second, the oil of master cylinder epicoele is extracted out a bit, reduces epicoele
Pressure, so impact are less；Replenishing valve is different from conventional directly opening, and replenishing valve is directly opened from 25MPa pressurize, hydraulic pressure
Impact is larger.Slide block backhaul：First solenoid directional control valve YV1 dead electricity, the first solenoid directional control valve YV1P mouth is connected with B mouth, replenishing valve
The hydraulic control mouth of D4 builds pressure, and replenishing valve D4 opens；Second solenoid directional control valve YV2 keeps dead electricity to make master cylinder epicoele and fuel tank keep connecing
Logical, servomotor M1 is incremented to by reverse low speed and reversely runs up, and the oil in fuel tank is unidirectional through the second oil filter L2 and second
Valve D2 enters servopump B1, and the hydraulic oil of servopump B1 output enters the cavity of resorption of master cylinder from the 3rd check valve D3, master cylinder epicoele
Oil is through replenishing valve D4 oil sump tank.The servo-pump control system being controlled using achievable rotating, can achieve " how much wanting to how many " control
System, accomplishes that reducing energy consumption reduces fluid overflow, reduces the rising of oil liquid temperature；Can with reference to hydraulic system using rotating servopump
The high precision position realizing slide position controls.
As the improvement of the present invention, the outlet of described servopump B1 is connected with fuel tank by the first overflow valve F1, described master
The cavity of resorption of cylinder is connected with fuel tank by the second overflow valve F2, and the 4th overflow valve F4 and oil are passed through in the outlet of described 3rd check valve D3
Case is connected.The Opening pressure of the second overflow valve F2 may be configured as 25Mpa, plays the effect of relief valve, prevents cavity of resorption from blocking；4th
The backhaul of the reversion for servopump B1 for the overflow valve F4 and slide block provides overflow protection, and Opening pressure may be configured as 3～10Mpa.
As a further improvement on the present invention, described fast lower valve group includes the first inserted valve C1 and the 3rd solenoid directional control valve
YV3, the cavity of resorption of described master cylinder is connected with the P mouth of the 3rd solenoid directional control valve YV3, the T mouth of the 3rd solenoid directional control valve YV3 and fuel tank phase
Even, the A mouth of the 3rd solenoid directional control valve YV3 is connected with the hydraulic control mouth of the first inserted valve C1, the entrance of the first inserted valve C1 and fuel tank
It is connected, the outlet of the first inserted valve C1 is connected with the cavity of resorption of described master cylinder, and the first inserted valve C1 is provided with aperture regulation handle.Slide block
When under fast, the 3rd solenoid directional control valve YV3 obtains electric, and the hydraulic control mouth of the first inserted valve C1 is communicated with fuel tank, and the first inserted valve C1 opens,
Master cylinder cavity of resorption and fuel tank are directly communicated, the speed under can controlling soon by aperture regulation handle.When slide block work is entered to pressurize,
3rd solenoid directional control valve YV3 dead electricity, the first inserted valve C1 closes and cuts off cavity of resorption oil return line, and the cavity of resorption oil of master cylinder is through the 3rd overflow
Valve F3 converges to the inlet port of servopump B1.When slide block pressurize, release and backhaul, the 3rd solenoid directional control valve YV3 keeps dead electricity, the
One inserted valve C1 remains turned-off.
As a further improvement on the present invention, the cavity of resorption of described master cylinder is also connected with the entrance of the 4th solenoid directional control valve YV4,
The outlet of described 4th solenoid directional control valve YV4 is connected with fuel tank by choke valve J1.Although the first inserted valve C1 can be by opening
Degree regulation handle carrys out the openings of sizes of regulating valve, but frequent manual adjustment is cumbersome, and still more a lot of lathe pumping plants are put,
Need operator to climb up to climb down, more inconvenient regulation；When under slide block is fast, while the 3rd solenoid directional control valve YV3 obtains electric, the
Four solenoid directional control valve YV4 must conduct, and can improve and descend speed soon.Additionally, slide block by change a job under fast into when, the 3rd electromagnetic switch
Valve YV3 dead electricity, the first inserted valve C1 closes suddenly, and for avoiding the formation of greater impact, the 4th solenoid directional control valve YV4 is kept as electricity,
Master cylinder cavity of resorption is communicated with fuel tank through the 4th solenoid directional control valve YV4 and choke valve J1；Servomotor M1 Positive work is incremented by by low speed
To at a high speed, realize soon lower turn slowly under smooth transition, it is to avoid hydraulic shock, be easy to the final exact position location control of slide block.
As a further improvement on the present invention, described servomotor M1 and first, second, third and fourth solenoid directional control valve are all controlled
In control system, described control system includes motion controller ESM, servo controller SDR and touch screen HMI, described touch screen
HMI is connected with the media interaction port J5 of described motion controller ESM, and the master cylinder displacement transducer SO of detection master cylinder position accesses
The holding wire of the master cylinder position signalling input J17 of described motion controller ESM, described upper cavity pressure sensor P1 accesses described
The logic control outfan J11 of the upper cavity pressure signal input part J7-1 of motion controller ESM, described motion controller ESM divides
Do not connect with coil YV1-K, YV2-K, YV3-K, YV4-K of described first, second, third and fourth solenoid directional control valve YV1, YV2, YV3, YV4
Connect；The rate signal input of the rate signal outfan J15 and described servo controller SDR of described motion controller ESM
CN2-AI1 is connected, the dtc signal of the dtc signal outfan J16 and described servo controller SDR of described motion controller ESM
Input CN2-AI2 is connected, and out-put supply port U, V, W of described servo controller SDR are connected with described servomotor M1, institute
The feedback signal terminal mouth CN1 stating servo controller SDR is connected with the encoder ENC of described servomotor；Servopump B1 is defeated for detection
The pump intake pressure sensor P0 going out pressure is connected with servopump pressure signal input end CN2-AI3 of described servo controller SDR.
The parameters being needed by the motor-driven work of user interface input hydraulic pressure on touch screen HMI, master cylinder displacement transducer SO is by master cylinder
Position signalling send to the master cylinder position signalling input J17 of motion controller ESM, upper cavity pressure sensor P1 is by master cylinder
Cavity pressure value sends to the upper cavity pressure signal input part J7-1 of motion controller ESM, and motion controller ESM is according to collecting
Signal enters row operation output speed command signal and torque instruction signal, is supplied to servo controller SDR, servo controller SDR
According to the speed command signal receiving, torque instruction signal, the feedback signal of encoder for servo motor ENC and servopump B1
Output pressure signal, controls rotating speed and the torque of servomotor M1.Motion controller ESM controls master always according to operation result simultaneously
The coil YV1-K of first, second, third and fourth solenoid directional control valve YV1, YV2, YV3, YV4 in cylinder hydraulic system, YV2-K, YV3-K,
YV4-K obtains electric or dead electricity.In position fixing process, the powerful operational capability of motion controller ESM ensure that quick response, realizes
Fast forward and reverse operating of servomotor, realizes being accurately positioned of slide block under closed loop control ensures.The employing of servo-pump control can
Realize the control of " want how many give how many ", realize instant fuel feeding using the high-speed response characteristic of servo, and by real-time detection Lai
From pressure and the flow signal of hydraulic press control system, adjust the rotating speed needed for each operating mode action in good time, allow the flow of pump output
Substantially meet system needs with pressure, and in non-action status, allow servomotor to remain static, accomplish energy-conservation, fall
Low oil temperature and minimizing fluid overflow leakage.
As a further improvement on the present invention, described in the holding wire of the bottom cylinder displacement transducer S1 of detection bottom cylinder position accesses
The bottom cylinder position signal input part J7-5 of motion controller ESM.Motion controller ESM not only receives master cylinder displacement transducer SO and sends out
The master cylinder position signalling sending, also receives the bottom cylinder position signal that bottom cylinder displacement transducer S1 sends, makes position control more accurate.
As a further improvement on the present invention, the logic control outfan J11 of described motion controller ESM also with control bottom
Coil YV5-K, YV6-K, YV7-K of each bottom cylinder solenoid directional control valve of cylinder action connects.Motion controller ESM ties always according to computing
In the cylinder hydraulic system of fruit control bottom, each electromagnetic switch valve coil YV5-K, YV6-K, YV7-K's obtains electric or dead electricity.
As a further improvement on the present invention, the warning output end ALM of described servo controller SDR and the first relay
The coil of KA1 connects, and the coil of the normally closed interlock of the first relay KA1 and the second relay KA2 and servo enable button SB1 string
It is connected to after connection between DC source, the self-keeping contact KA2-1 of the second relay is connected in parallel on the two ends that servo enables button SB1,
The normally open contact KA2-2 of the second relay is connected on enable signal input part S-ON and the DC source of servo controller SDR
Between negative pole VDC-, between the ann reset signal input part ALM-RST of servo controller SDR and the negative pole VDC- of DC source
It is connected with ann reset button SB0.Press servo and enable button SB1, the coil of the second relay KA2 obtains electric, the second relay
Self-keeping contact's KA2-1 adhesive self-insurance, the second relay normally open contact KA2-2 closure, the enable signal of servo controller SDR
Input S-ON receives enable signal, and servo controller SDR devotes oneself to work.When servo controller SDR output alarm signal,
The coil of the first relay KA1 obtains electric, and the normally closed interlock of the first relay KA1 disconnects, the coil losing electricity of the second relay KA2,
The normally open contact KA2-2 of the second relay disconnects, and the enable signal input part S-ON of servo controller SDR does not receive enable letter
Number, servo controller SDR quits work.Push for emergency SR SB0, alarm release.
As a further improvement on the present invention, described servo controller SDR is PRONET-2BDTB type servo controller, institute
Stating motion controller ESM is ESMOTION N35 type motion controller, and described master cylinder displacement transducer SO stretches for absolute type mangneto
Reduced scale.
As a further improvement on the present invention, described control system realizes following action in each block circulation successively：
(1) under slide block is fast：First solenoid directional control valve YV1, the second solenoid directional control valve YV2, the 3rd solenoid directional control valve YV3 and the 4th electromagnetism change
To valve YV4 all electric, servomotor M1 forward direction low-speed running, servopump B1 output hydraulic oil from the second solenoid directional control valve YV2
Enter the epicoele of master cylinder, replenishing valve D4 self-priming is opened, fuel tank passes through the epicoele repairing to master cylinder for the replenishing valve D4；First inserted valve C1
Open so that master cylinder cavity of resorption and fuel tank directly communicate；(2) slide block slows down：First solenoid directional control valve YV1, the second solenoid directional control valve
YV2 and the 4th solenoid directional control valve YV4 is kept as electricity, the 3rd solenoid directional control valve YV3 dead electricity, and the first inserted valve C1 closes, under master cylinder
Chamber the 4th solenoid directional control valve YV4 and choke valve J1 is communicated with fuel tank；Servomotor M1 Positive work is incremented at a high speed by low speed,
Realize soon lower turn slowly under smooth transition；(3) slide block work enters pressurization：First solenoid directional control valve YV1 and the second solenoid directional control valve YV2
It is kept as electricity, the 3rd solenoid directional control valve YV3 keeps dead electricity, the 4th solenoid directional control valve YV4 dead electricity, and under master cylinder, cavity pressure increases, when
When cavity of resorption back pressure exceedes setting value, the 3rd overflow valve F3 opens, and the cavity of resorption oil of master cylinder converges to the inlet port of servopump B1；Servo
Motor M1 forward direction runs up, and master cylinder upper cavity pressure raises rapidly, closes replenishing valve, enter at a slow speed by work for slide block；(4) slide block pressurize：The
One solenoid directional control valve YV1 and the second solenoid directional control valve YV2 is kept as electricity, the 3rd solenoid directional control valve YV3 and the 4th solenoid directional control valve
YV4 keep dead electricity, servomotor M1 keep forward direction run up, when a length of 0.5 second；(5) slide block release：First solenoid directional control valve
YV1 is kept as electricity, the second solenoid directional control valve YV2 dead electricity, and the 3rd solenoid directional control valve YV3 and the 4th solenoid directional control valve YV4 keeps losing
Electricity, servomotor M1 off-load low speed to antiport, duration is about 0.5 second；(6) slide block backhaul：First solenoid directional control valve YV1 loses
Electricity, the second solenoid directional control valve YV2, the 3rd solenoid directional control valve YV3 and the 4th solenoid directional control valve YV4 keep dead electricity, and replenishing valve D4 beats
Open；Servomotor M1 is incremented to by reverse low speed and reversely runs up, and the hydraulic oil of servopump B1 output is from the 3rd check valve D3
Enter the cavity of resorption of master cylinder, the oil of master cylinder epicoele is through replenishing valve D4 oil sump tank.This process achieve slide block soon lower turn slowly under steady
Transition, it is to avoid hydraulic shock；Using kinetic control system, the slide position signal according to collection and cylinder upper cavity oil pressure signal enter
Row operation output control signal is to servo controller, and then the rotating speed of control servomotor and torque, in position fixing process, motion
The powerful operational capability of controller ensure that quick response, realizes fast forward and reverse operating of servomotor, protects in closed loop control
Being accurately positioned of slide block is realized under card.
Brief description
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description, accompanying drawing only provide with reference to
Illustrate to use, be not used to limit the present invention.
Fig. 1 is the hydraulic schematic diagram one of the servo-pump control hydraulic press of the high fine positioning of the present invention.
Fig. 2 is the hydraulic schematic diagram two of the servo-pump control hydraulic press of the high fine positioning of the present invention.
Fig. 3 is the electrical schematic diagram of the servo-pump control hydraulic press of the high fine positioning of the present invention.
In figure：1. master cylinder；B1. servopump；M1. servomotor；C1. the first inserted valve；D1. the first check valve；D2. second
Check valve；D3. the 3rd check valve；D4. replenishing valve；F1. the first overflow valve；F2. the second overflow valve；F3. the 3rd overflow valve；F4.
4th overflow valve；YV1. the first solenoid directional control valve；YV2. the second solenoid directional control valve；YV3. the 3rd solenoid directional control valve；YV4. the 4th
Solenoid directional control valve；The coil of YV5-K, YV6-K, YV7-K. bottom cylinder solenoid directional control valve；J1. choke valve；L1. the first oil filter；L2.
Second oil filter；P0. pump intake pressure sensor；P1. upper cavity pressure sensor；SO. master cylinder displacement transducer；S1. bottom cylinder displacement
Sensor；QF1. chopper；EM1. wave filter；ESM. motion controller；SDR. servo controller；HMI. touch screen；ENC. watch
Take motor encoder；KA1. the first relay；KA2. the second relay；SB0. ann reset button；SB1. servo enables button.
Specific embodiment
As shown in figure 1, the servo-pump control hydraulic press of the high fine positioning of the present invention, drive including master cylinder 1 with by servomotor M1
Servopump B1, the epicoele of master cylinder is connected with fuel tank by replenishing valve D4, and the suction inlet of servopump B1 is gone out with the first check valve D1's
Mouthful it is connected, the entrance of the first check valve D1 is connected with fuel tank by the first oil filter L1, the outlet of servopump B1 and the second electromagnetism
The P mouth of reversal valve YV2 is connected, and the A mouth of the second solenoid directional control valve YV2 and T mouth are connected with fuel tank respectively, the second solenoid directional control valve
The B mouth of YV2 is connected with the epicoele of master cylinder, and the epicoele pipeline of master cylinder is provided with upper cavity pressure sensor P1；Servopump B1 goes out
Mouth is also connected with the outlet of the second check valve D2, and the entrance of the second check valve D2 is connected with fuel tank by the second oil filter L2；Main
The cavity of resorption of cylinder is connected with the entrance of the 3rd check valve D3, and the outlet of the 3rd check valve D3 is connected with the outlet of the first check valve D1,
The two ends of the 3rd check valve D3 are parallel with the 3rd overflow valve F3；The hydraulic control mouth of replenishing valve D4 and the B mouth of the first solenoid directional control valve YV1
Be connected, the P mouth of the first solenoid directional control valve YV1 is connected with the outlet of the 3rd check valve D3, the T mouth of the first solenoid directional control valve YV1 and
Fuel tank is connected；First solenoid directional control valve YV1 and the second solenoid directional control valve YV2 is two four-way electromagnetic reversing valves；Under master cylinder
Chamber is connected with fuel tank also by descending valve group soon.
When under slide block is fast：Second solenoid directional control valve YV2 obtains electric, and the P mouth of the second solenoid directional control valve YV2 is communicated with B mouth, servo
Motor M1 forward direction low-speed running, the oil in fuel tank enters servopump B1, servopump through the first oil filter L1 and the first check valve D1
The hydraulic oil of B1 output enters the epicoele of master cylinder from the B mouth of the second solenoid directional control valve YV2；Descend valve group conducting soon so that leading simultaneously
Cylinder cavity of resorption and fuel tank directly communicate, and slide block is in no bearing state, under gravity, sharp downward movement；First electromagnetism changes
Obtain electric to valve YV1, the first solenoid directional control valve YV1B mouth is connected with T mouth, the hydraulic control mouth decompression of replenishing valve D4, and replenishing valve D4 self-priming is beaten
Open, fuel tank passes through the epicoele repairing to master cylinder for the replenishing valve D4.
When slide block work is entered to pressurize：First solenoid directional control valve YV1, the second solenoid directional control valve YV2 are kept as electricity, descend valve group to close soon
Close and cavity of resorption oil return line is cut off, slide block can not move downward under Gravitative Loads, lower cavity pressure increases and produces back pressure, when cavity of resorption pressure
When power is increased to back pressure setting value for example, 3～10Mpa, the 3rd overflow valve F3 opens, and the cavity of resorption oil of master cylinder is through the 3rd overflow valve
F3 converges to the inlet port of servopump B1, and servomotor M1 forward direction runs up, and master cylinder upper cavity pressure raises rapidly, closes topping up
Valve, slide block under pressure oil effect, enter at a slow speed by work.
Slide block pressurize：First solenoid directional control valve YV1, the second solenoid directional control valve YV2 are kept as electricity, descend valve group to keep closing soon
Close, servomotor M1 keeps forward direction to run up, and duration is about 0.5 second.
Slide block release：First solenoid directional control valve YV1 is kept as electricity, the second solenoid directional control valve YV2 dead electricity, master cylinder epicoele with oil
Case damping is connected；Valve group is descended to remain turned-off soon, servomotor M1 off-load low speed to antiport, duration is about 0.5 second, by master cylinder
The oil of epicoele is extracted out a bit, reduces upper cavity pressure, and so impact is less；Different from conventional replenishing valve of directly opening, replenishing valve
Directly open from 25MPa pressurize, hydraulic shock is larger.
Slide block backhaul：First solenoid directional control valve YV1 dead electricity, the first solenoid directional control valve YV1P mouth is connected with B mouth, replenishing valve D4
Hydraulic control mouth build pressure, replenishing valve D4 opens；Second solenoid directional control valve YV2 keeps dead electricity so that master cylinder epicoele and fuel tank is remained up,
Servomotor M1 is incremented to by reverse low speed and reversely runs up, and the oil in fuel tank is through the second oil filter L2 and the second check valve D2
Enter servopump B1, the hydraulic oil of servopump B1 output enters the cavity of resorption of master cylinder, the oil warp of master cylinder epicoele from the 3rd check valve D3
Replenishing valve D4 oil sump tank.
The servo-pump control system being controlled using achievable rotating, be can achieve that " how much wanting to how many " controls, accomplishes to reduce
Energy consumption reduces fluid overflow, reduces the rising of oil liquid temperature；Hydraulic system is combined using rotating servopump and can achieve slide block position
The high precision position put controls.
The outlet of servopump B1 is connected with fuel tank by the first overflow valve F1, the cavity of resorption of master cylinder pass through the second overflow valve F2 with
Fuel tank is connected, and the outlet of the 3rd check valve D3 is connected with fuel tank by the 4th overflow valve F4.The Opening pressure of the second overflow valve F2
May be configured as 25Mpa, play the effect of relief valve, prevent cavity of resorption from blocking；4th overflow valve F4 is reversion and the cunning of servopump B1
The backhaul of block provides overflow protection, and Opening pressure may be configured as 3～10Mpa.
Valve group is descended to include the first inserted valve C1 and the 3rd solenoid directional control valve YV3, the cavity of resorption of master cylinder and the 3rd electromagnetic switch soon
The P mouth of valve YV3 is connected, and the T mouth of the 3rd solenoid directional control valve YV3 is connected with fuel tank, the A mouth and first of the 3rd solenoid directional control valve YV3
The hydraulic control mouth of inserted valve C1 is connected, and the entrance of the first inserted valve C1 is connected with fuel tank, the outlet of the first inserted valve C1 and master cylinder
Cavity of resorption is connected, and the first inserted valve C1 is provided with aperture regulation handle.When under slide block is fast, the 3rd solenoid directional control valve YV3 obtain electric, first insert
The hydraulic control mouth of dress valve C1 is communicated with fuel tank, and the first inserted valve C1 opens so that master cylinder cavity of resorption and fuel tank directly communicate, by aperture
Regulation handle can control soon under speed.When slide block work is entered to pressurize, the 3rd solenoid directional control valve YV3 dead electricity, the first inserted valve C1
Close and cavity of resorption oil return line is cut off, the cavity of resorption oil of master cylinder converges to the inlet port of servopump B1 through the 3rd overflow valve F3.Slide block is protected
When pressure, release and backhaul, the 3rd solenoid directional control valve YV3 keeps dead electricity, and the first inserted valve C1 remains turned-off.
As shown in Fig. 2 the cavity of resorption of master cylinder is also connected with the entrance of the 4th solenoid directional control valve YV4, the 4th solenoid directional control valve YV4
Outlet be connected with fuel tank by choke valve J1.Although the first inserted valve C1 can be by aperture regulation handle opening come regulating valve
Mouth size, but frequent manual adjustment is cumbersome, still more a lot of lathe pumping plants is put, needs operator to climb up and climb down, more
Plus be inconvenient to adjust；When under slide block is fast, while the 3rd solenoid directional control valve YV3 obtains electric, the 4th solenoid directional control valve YV4 obtains conductance
Logical, can improve and descend speed soon.Additionally, slide block by change a job under fast into when, the 3rd solenoid directional control valve YV3 dead electricity, the first inserted valve
C1 closes suddenly, and for avoiding the formation of greater impact, the 4th solenoid directional control valve YV4 is kept as electricity, and master cylinder cavity of resorption changes through the 4th electromagnetism
Communicate to valve YV4 and choke valve J1 with fuel tank；Servomotor M1 Positive work is incremented at a high speed by low speed, realize soon lower turn slowly under
Smooth transition, it is to avoid hydraulic shock, be easy to the final exact position location control of slide block.
As shown in figure 3, servomotor M1 and first, second, third and fourth solenoid directional control valve are controlled by control system, control system
System includes motion controller ESM, servo controller SDR and touch screen HMI, and the media of touch screen HMI and motion controller ESM are handed over
Mutually port J5 connects, and the master cylinder position signalling of the master cylinder displacement transducer SO access motion controller ESM of detection master cylinder position is defeated
Enter and hold J17, the holding wire of upper cavity pressure sensor P1 accesses the upper cavity pressure signal input part J7-1 of motion controller ESM, fortune
The logic control outfan J11 of movement controller ESM is respectively with first, second, third and fourth solenoid directional control valve YV1, YV2, YV3, YV4's
Coil YV1-K, YV2-K, YV3-K, YV4-K connect；The rate signal outfan J15 of motion controller ESM and servo controller
The rate signal input CN2-AI1 of SDR is connected, the dtc signal outfan J16 of motion controller ESM and servo controller
The dtc signal input CN2-AI2 of SDR is connected, and out-put supply port U, V, W and servomotor M1 of servo controller SDR are even
Connect, the feedback signal terminal mouth CN1 of servo controller SDR is connected with encoder for servo motor ENC；Detection servopump B1 output pressure
Pump intake pressure sensor P0 be connected with servopump pressure signal input end CN2-AI3 of servo controller SDR.Alternating current power supply warp
Circuit breaker Q F1 and the input power interface of wave filter EM1 access servo controller SDR.
The parameters being needed by the motor-driven work of user interface input hydraulic pressure on touch screen HMI, master cylinder displacement transducer
The position signalling of master cylinder is sent to the master cylinder position signalling input J17, upper cavity pressure sensor P1 of motion controller ESM by SO
Master cylinder upper cavity pressure value is sent to the upper cavity pressure signal input part J7-1 of motion controller ESM, motion controller ESM according to
The signal collecting enters row operation output speed command signal and torque instruction signal, is supplied to servo controller SDR, servo control
Device SDR processed according to the speed command signal receiving, torque instruction signal, the feedback signal of encoder for servo motor ENC and watches
Take the output pressure signal of pump B1, control rotating speed and the torque of servomotor M1.Motion controller ESM ties always according to computing simultaneously
Fruit control the coil YV1-K of first, second, third and fourth solenoid directional control valve YV1, YV2, YV3, YV4 in master cylinder hydraulic pressure system, YV2-K,
YV3-K, YV4-K obtain electric or dead electricity.In the course of the work, the powerful operational capability of motion controller ESM ensure that and quickly rings
Should, realize fast forward and reverse operating of servomotor, under closed loop control ensures, realize being accurately positioned of slide block.
The employing of servo-pump control can achieve the control of " how much wanting to how many ", and the high-speed response characteristic realization using servo is
When fuel feeding, and the pressure of hydraulic press control system and flow signal are derived from by real-time detection, adjust each operating mode action institute in good time
The rotating speed needing, allows the flow of pump output and pressure substantially meet system needs, and in non-action status, allows at servomotor
In resting state, accomplish energy-conservation, reduce oil temperature and reduce fluid overflow leakage.
The holding wire of the bottom cylinder displacement transducer S1 of detection bottom cylinder position accesses the bottom cylinder position signal of motion controller ESM
Input J7-5.Motion controller ESM not only receives the master cylinder position signalling of master cylinder displacement transducer SO transmission, also receives bottom cylinder
The bottom cylinder position signal that displacement transducer S1 sends, makes position control more accurate.
The logic control outfan J11 of motion controller ESM also with each bottom cylinder solenoid directional control valve controlling bottom cylinder action
Coil YV5-K, YV6-K, YV7-K connect.Motion controller ESM controls each electromagnetism in the cylinder hydraulic system of bottom always according to operation result
Commutation valve coil YV5-K, YV6-K, YV7-K obtain electric or dead electricity.
The warning output end ALM of servo controller SDR is connected with the coil of the first relay KA1, the first relay KA1's
Normally closed interlock enables after button SB1 connects and is connected between DC source with the coil of the second relay KA2 and servo, and second continues
The self-keeping contact KA2-1 of electrical equipment is connected in parallel on the two ends that servo enables button SB1, the normally open contact KA2-2 series connection of the second relay
Between the enable signal input part S-ON and negative pole VDC- of DC source of servo controller SDR, the report of servo controller SDR
It is connected with ann reset button SB0 between the alert reset signal input ALM-RST and negative pole VDC- of DC source.
Press servo and enable button SB1, the coil of the second relay KA2 obtains electric, the self-keeping contact KA2-1 of the second relay
Adhesive self-insurance, the normally open contact KA2-2 closure of the second relay, the enable signal input part S-ON of servo controller SDR receives
To enabling signal, servo controller SDR devotes oneself to work.When servo controller SDR output alarm signal, the first relay KA1
Coil obtain electric, the normally closed interlock of the first relay KA1 disconnects, the coil losing electricity of the second relay KA2, the second relay normal
Open contact KA2-2 disconnects, and the enable signal input part S-ON of servo controller SDR does not receive enable signal, servo controller
SDR quits work.Push for emergency SR SB0, alarm release.
Control system realizes following action in each block circulation successively：
(1) under slide block is fast：First solenoid directional control valve YV1, the second solenoid directional control valve YV2, the 3rd solenoid directional control valve YV3 and
Four solenoid directional control valve YV4 all electric, servomotor M1 forward direction low-speed running, servopump B1 output hydraulic oil change from the second electromagnetism
Enter the epicoele of master cylinder to valve YV2, replenishing valve D4 self-priming is opened, fuel tank passes through the epicoele repairing to master cylinder for the replenishing valve D4；First
Inserted valve C1 opens so that master cylinder cavity of resorption and fuel tank directly communicate.
(2) slide block slows down：First solenoid directional control valve YV1, the second solenoid directional control valve YV2 and the 4th solenoid directional control valve YV4 keep
Obtain electric, the 3rd solenoid directional control valve YV3 dead electricity, the first inserted valve C1 closes, and master cylinder cavity of resorption is through the 4th solenoid directional control valve YV4 and throttling
Valve J1 is communicated with fuel tank；Servomotor M1 Positive work is incremented at a high speed by low speed, realize soon lower turn slowly under smooth transition.
(3) slide block work enters pressurization：First solenoid directional control valve YV1 and the second solenoid directional control valve YV2 is kept as electricity, the 3rd electromagnetism
Reversal valve YV3 keeps dead electricity, the 4th solenoid directional control valve YV4 dead electricity, and under master cylinder, cavity pressure increases, when cavity of resorption back pressure exceedes setting value
When, the 3rd overflow valve F3 opens, and the cavity of resorption oil of master cylinder converges to the inlet port of servopump B1；Servomotor M1 is positive to be transported at a high speed
Turn, master cylinder upper cavity pressure raises rapidly, close replenishing valve, enter at a slow speed by work for slide block.
(4) slide block pressurize：First solenoid directional control valve YV1 and the second solenoid directional control valve YV2 is kept as electricity, the 3rd electromagnetic switch
Valve YV3 and the 4th solenoid directional control valve YV4 keep dead electricity, and servomotor M1 keeps forward direction to run up, when a length of 0.5 second.
(5) slide block release：First solenoid directional control valve YV1 is kept as electricity, the second solenoid directional control valve YV2 dead electricity, and the 3rd electromagnetism changes
Keep dead electricity to valve YV3 and the 4th solenoid directional control valve YV4, to antiport, duration is about 0.5 to servomotor M1 off-load low speed
Second.
(6) slide block backhaul：First solenoid directional control valve YV1 dead electricity, the second solenoid directional control valve YV2, the 3rd solenoid directional control valve YV3
Keep dead electricity with the 4th solenoid directional control valve YV4, replenishing valve D4 opens；Servomotor M1 is incremented to reverse fortune at a high speed by reverse low speed
Turn, the hydraulic oil of servopump B1 output enters the cavity of resorption of master cylinder from the 3rd check valve D3, the oil of master cylinder epicoele returns through replenishing valve D4
Fuel tank.
Servo controller SDR is PRONET-2BDTB type servo controller, and motion controller ESM is ESMOTION N35 type
Motion controller, master cylinder displacement transducer SO is absolute type magnetostriction chi.
The foregoing is only the preferable possible embodiments of the present invention, the non-patent protection model therefore limiting to the present invention
Enclose.In addition to the implementation, the present invention can also have other embodiment.All employing equivalents or the skill of equivalent transformation formation
Art scheme, all falls within the protection domain of application claims.The present invention can pass through or using existing without the technical characteristic of description
There is technology to realize, will not be described here.
Claims (10)
1. a kind of servo-pump control hydraulic press of high fine positioning, including master cylinder（1）With by servomotor（M1）The servopump driving
（B1）, the epicoele of described master cylinder is by replenishing valve（D4）It is connected with fuel tank, described servopump（B1）Suction inlet and the first check valve
（D1）Outlet be connected, the first check valve（D1）Entrance pass through the first oil filter（L1）Be connected with fuel tank it is characterised in that：Institute
State servopump（B1）Outlet and the second solenoid directional control valve（YV2）P mouth be connected, the second solenoid directional control valve（YV2）A mouth and T
Mouth is connected with fuel tank respectively, the second solenoid directional control valve（YV2）B mouth be connected with the epicoele of described master cylinder, the epicoele of described master cylinder
Upper cavity pressure sensor is provided with pipeline（P1）；Described servopump（B1）Outlet also with the second check valve（D2）Outlet phase
Even, the second check valve（D2）Entrance pass through the second oil filter（L2）It is connected with fuel tank；The cavity of resorption of described master cylinder is unidirectional with the 3rd
Valve（D3）Entrance be connected, the 3rd check valve（D3）Outlet and the first check valve（D1）Outlet be connected, the 3rd check valve
（D3）Two ends be parallel with the 3rd overflow valve（F3）；Described replenishing valve（D4）Hydraulic control mouth and the first solenoid directional control valve（YV1）B
Mouth is connected, the first solenoid directional control valve（YV1）P mouth and the 3rd check valve（D3）Outlet be connected, the first solenoid directional control valve（YV1）
T mouth be connected with fuel tank；First solenoid directional control valve（YV1）With the second solenoid directional control valve（YV2）It is two four-way electromagnetic commutations
Valve；The cavity of resorption of described master cylinder is connected with fuel tank also by descending valve group soon.
2. high fine positioning according to claim 1 servo-pump control hydraulic press it is characterised in that：Described servopump（B1）'s
The first overflow valve is passed through in outlet（F1）It is connected with fuel tank, the cavity of resorption of described master cylinder passes through the second overflow valve（F2）It is connected with fuel tank,
Described 3rd check valve（D3）Outlet pass through the 4th overflow valve（F4）It is connected with fuel tank.
3. high fine positioning according to claim 1 servo-pump control hydraulic press it is characterised in that：Described fast lower valve group includes
First inserted valve（C1）With the 3rd solenoid directional control valve（YV3）, the cavity of resorption of described master cylinder and the 3rd solenoid directional control valve（YV3）P mouth
It is connected, the 3rd solenoid directional control valve（YV3）T mouth be connected with fuel tank, the 3rd solenoid directional control valve（YV3）A mouth and the first inserted valve
（C1）Hydraulic control mouth be connected, the first inserted valve（C1）Entrance be connected with fuel tank, the first inserted valve（C1）Outlet and described master
The cavity of resorption of cylinder is connected, the first inserted valve（C1）It is provided with aperture regulation handle.
4. high fine positioning according to claim 3 servo-pump control hydraulic press it is characterised in that：The cavity of resorption of described master cylinder is also
With the 4th solenoid directional control valve（YV4）Entrance be connected, described 4th solenoid directional control valve（YV4）Outlet pass through choke valve（J1）With
Fuel tank is connected.
5. high fine positioning according to claim 4 servo-pump control hydraulic press it is characterised in that：Described servomotor（M1）
It is controlled by control system with first, second, third and fourth solenoid directional control valve, described control system includes motion controller（ESM）, watch
Take controller（SDR）And touch screen（HMI）, described touch screen（HMI）With described motion controller（ESM）Media interact port
（J5）Connect, the master cylinder displacement transducer of detection master cylinder position（SO）Access described motion controller（ESM）Master cylinder position letter
Number input（J17）, described upper cavity pressure sensor（P1）Holding wire access described motion controller（ESM）Upper cavity pressure
Signal input part（J7-1）, described motion controller（ESM）Logic control outfan（J11）Respectively with described first and second,
3rd, four solenoid directional control valve（YV1、YV2、YV3、YV4）Coil（YV1-K、YV2-K、YV3-K、YV4-K）Connect；Described motion
Controller（ESM）Rate signal outfan（J15）With described servo controller（SDR）Rate signal input（CN2-
AI1）It is connected, described motion controller（ESM）Dtc signal outfan（J16）With described servo controller（SDR）Torque
Signal input part（CN2-AI2）It is connected, described servo controller（SDR）Out-put supply port（U、V、W）With described servo electricity
Machine（M1）Connect, described servo controller（SDR）Feedback signal terminal mouth（CN1）Encoder with described servomotor（ENC）
Connect；Detection servopump（B1）The pump intake pressure sensor of output pressure（P0）With described servo controller（SDR）Servopump
Pressure signal input end（CN2-AI3）It is connected.
6. high fine positioning according to claim 5 servo-pump control hydraulic press it is characterised in that：The bottom of detection bottom cylinder position
Cylinder displacement transducer（S1）Holding wire access described motion controller（ESM）Bottom cylinder position signal input part（J7-5）.
7. high fine positioning according to claim 5 servo-pump control hydraulic press it is characterised in that：Described motion controller
（ESM）Logic control outfan（J11）Coil also with each bottom cylinder solenoid directional control valve controlling bottom cylinder action（YV5-K、YV6-
K、YV7-K）Connect.
8. the high fine positioning according to claim 5 or 6 or 7 servo-pump control hydraulic press it is characterised in that：Described servo control
Device processed（SDR）Warning output end（ALM）With the first relay（KA1）Coil connect, the first relay（KA1）Normally closed touch
Head and the second relay（KA2）Coil and servo enable button（SB1）It is connected to after series connection between DC source, the second relay
The self-keeping contact of device（KA2-1）It is connected in parallel on servo and enable button（SB1）Two ends, the normally open contact of the second relay（KA2-2）
It is connected on servo controller（SDR）Enable signal input part（S-ON）Negative pole with DC source（VDC-）Between, servo control
Device processed（SDR）Ann reset signal input part（ALM-RST）Negative pole with DC source（VDC-）Between to be connected with warning multiple
Position button（SB0）.
9. the high fine positioning according to claim 5 or 6 or 7 servo-pump control hydraulic press it is characterised in that：Described servo control
Device processed（SDR）For PRONET-2BDTB type servo controller, described motion controller（ESM）Move for ESMOTION N35 type and control
Device processed, described master cylinder displacement transducer（SO）For absolute type magnetostriction chi.
10. the servo-pump control hydraulic press of high fine positioning according to claim 5 is it is characterised in that described control system exists
Following action is realized successively in each block circulation：
(1) under slide block is fast：First solenoid directional control valve（YV1）, the second solenoid directional control valve（YV2）, the 3rd solenoid directional control valve（YV3）With
4th solenoid directional control valve（YV4）All electric, servomotor（M1）Positive low-speed running, servopump（B1）The hydraulic oil of output is from the
Two solenoid directional control valves（YV2）Enter the epicoele of master cylinder, replenishing valve（D4）Self-priming is opened, and fuel tank passes through replenishing valve（D4）To master cylinder
Epicoele repairing；First inserted valve（C1）Open so that master cylinder cavity of resorption and fuel tank directly communicate；
(2) slide block slows down：First solenoid directional control valve（YV1）, the second solenoid directional control valve（YV2）With the 4th solenoid directional control valve（YV4）Protect
Hold electric, the 3rd solenoid directional control valve（YV3）Dead electricity, the first inserted valve（C1）Close, master cylinder cavity of resorption is through the 4th solenoid directional control valve
（YV4）And choke valve（J1）Communicate with fuel tank；Servomotor（M1）Positive work is incremented at a high speed by low speed, realizes soon that lower turn slowly
Under smooth transition；
(3) slide block work enters pressurization：First solenoid directional control valve（YV1）With the second solenoid directional control valve（YV2）It is kept as electricity, the 3rd electromagnetism
Reversal valve（YV3）Keep dead electricity, the 4th solenoid directional control valve（YV4）Dead electricity, under master cylinder, cavity pressure increases, and sets when cavity of resorption back pressure exceedes
During definite value, the 3rd overflow valve（F3）Open, the cavity of resorption oil of master cylinder converges to servopump（B1）Inlet port；Servomotor（M1）Just
To running up, master cylinder upper cavity pressure raises rapidly, closes replenishing valve, enter at a slow speed by work for slide block；
(4) slide block pressurize：First solenoid directional control valve（YV1）With the second solenoid directional control valve（YV2）It is kept as electricity, the 3rd electromagnetic switch
Valve（YV3）With the 4th solenoid directional control valve（YV4）Keep dead electricity, servomotor（M1）Keep forward direction run up, when a length of 0.5
Second；
(5) slide block release：First solenoid directional control valve（YV1）It is kept as electricity, the second solenoid directional control valve（YV2）Dead electricity, the 3rd electromagnetism changes
To valve（YV3）With the 4th solenoid directional control valve（YV4）Keep dead electricity, servomotor（M1）Off-load low speed to antiport, when be about
For 0.5 second；
(6) slide block backhaul：First solenoid directional control valve（YV1）Dead electricity, the second solenoid directional control valve（YV2）, the 3rd solenoid directional control valve
（YV3）With the 4th solenoid directional control valve（YV4）Keep dead electricity, replenishing valve（D4）Open；Servomotor（M1）It is incremented by by reverse low speed
To reversely running up, servopump（B1）The hydraulic oil of output is from the 3rd check valve（D3）Enter the cavity of resorption of master cylinder, master cylinder epicoele
Oil through replenishing valve（D4）Oil sump tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620891353.XU CN205937264U (en) | 2016-08-17 | 2016-08-17 | Servopump accuse hydraulic press of high fine positioning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620891353.XU CN205937264U (en) | 2016-08-17 | 2016-08-17 | Servopump accuse hydraulic press of high fine positioning |
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| CN205937264U true CN205937264U (en) | 2017-02-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122128A (en) * | 2016-08-17 | 2016-11-16 | 江苏国力锻压机床有限公司 | A kind of servo-pump control hydraulic press of high fine positioning |
| CN108035926A (en) * | 2017-12-13 | 2018-05-15 | 安徽天水液压机床科技有限公司 | A kind of application method of multi-cylinder linkage hydraulic system of hydraulic machine |
| CN111604451A (en) * | 2020-05-20 | 2020-09-01 | 天津天锻航空科技有限公司 | Control method and control system for hot forming process of high-precision forging hydraulic press |
-
2016
- 2016-08-17 CN CN201620891353.XU patent/CN205937264U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122128A (en) * | 2016-08-17 | 2016-11-16 | 江苏国力锻压机床有限公司 | A kind of servo-pump control hydraulic press of high fine positioning |
| CN106122128B (en) * | 2016-08-17 | 2017-11-21 | 江苏国力锻压机床有限公司 | A kind of servo-pump control hydraulic press of high fine positioning |
| CN108035926A (en) * | 2017-12-13 | 2018-05-15 | 安徽天水液压机床科技有限公司 | A kind of application method of multi-cylinder linkage hydraulic system of hydraulic machine |
| CN111604451A (en) * | 2020-05-20 | 2020-09-01 | 天津天锻航空科技有限公司 | Control method and control system for hot forming process of high-precision forging hydraulic press |
| CN111604451B (en) * | 2020-05-20 | 2022-06-17 | 天津天锻航空科技有限公司 | Control method and control system for hot forming process of high-precision forging hydraulic press |
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